TY - GEN
T1 - Universal Neutral Point Balancing Algorithm for Three-phase Three-level Converters with Hybrid of Zero-sequence Signal Injection and Virtual Zero-level Modulation
AU - Wang, Jun
AU - Yuan, Xibo
AU - Dagan, Kfir J.
AU - Mellor, Phil
AU - Drury, David
AU - Bloor, Andrew
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/3
Y1 - 2018/12/3
N2 - This paper presents a new carrier-based voltage balancing scheme for three-phase, three-level converters. The proposed scheme utilizes two available degrees of freedom, Zero-sequence Signal Injection (ZSI) and Virtual Zero-level Modulation (VZM), to eliminate the low-frequency neutral point voltage oscillation. It is universally effective over the full power factor and modulation index range and easy to implement in digital controllers. The main drawback of VZM, increased switching loss due to additional switching transitions, is minimized in this scheme. Extra controllability is gained in the proposed hybrid scheme by utilizing two degrees of freedom at the same time. The performance of proposed scheme is evaluated through simulation models and an experimental test rig.
AB - This paper presents a new carrier-based voltage balancing scheme for three-phase, three-level converters. The proposed scheme utilizes two available degrees of freedom, Zero-sequence Signal Injection (ZSI) and Virtual Zero-level Modulation (VZM), to eliminate the low-frequency neutral point voltage oscillation. It is universally effective over the full power factor and modulation index range and easy to implement in digital controllers. The main drawback of VZM, increased switching loss due to additional switching transitions, is minimized in this scheme. Extra controllability is gained in the proposed hybrid scheme by utilizing two degrees of freedom at the same time. The performance of proposed scheme is evaluated through simulation models and an experimental test rig.
KW - Carrier-based
KW - Neutral point balancing
KW - Power loss
KW - Pulse width modulation
KW - Three level converter
UR - http://www.scopus.com/inward/record.url?scp=85060287540&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2018.8558224
DO - 10.1109/ECCE.2018.8558224
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AN - SCOPUS:85060287540
T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
SP - 2200
EP - 2206
BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Y2 - 23 September 2018 through 27 September 2018
ER -